Miami plans to sign Walker to a one-year contract, Adam Schefter of ESPN reports.
Walker will not need surgery to repair a knee injury that put him on IR on Jan. 5 and ended his season early, Jake Trotter of ESPN.com reports.
The Browns placed Walker (knee) on injured reserve Friday.
Walker (knee) is out for Sunday's game at Cincinnati, Mary Kay Cabot of The Cleveland Plain Dealer reports.
Walker (knee) is out for Thursday's game versus the Jets, Mary Kay Cabot of The Cleveland Plain Dealer reports.
Walker (knee) has been ruled out for Sunday's contest against the Texans, Mary Kay Cabot of The Cleveland Plain Dealer reports.
Walker (knee) is inactive for Sunday's game against the Bears.
Walker (knee) is listed as questionable ahead of Sunday's game against the Bears, Mary Kay Cabot of The Cleveland Plain Dealer reports.
Walker (hamstring) is out for Sunday's game against the Broncos.
Walker (hamstring) is listed as questionable for Sunday's game against the Broncos, Mark Kay Cabot of the Cleveland Plain Dealer reports.